Re: So stuffed up

From:
"Giovanni Dicanio" <giovanni.dicanio@invalid.com>
Newsgroups:
microsoft.public.vc.language
Date:
Wed, 11 Jun 2008 12:59:00 +0200
Message-ID:
<#J2IPK7yIHA.4168@TK2MSFTNGP06.phx.gbl>
"Jack" <jl@knight.com> ha scritto nel messaggio
news:ePP17C7yIHA.1768@TK2MSFTNGP03.phx.gbl...

No use, I have tried using _UNICODE and change the startup stub.
CoreExport virtual char* GetRsrcString(long id) { return ""; }

--------------------Configuration: try1 - Win32 Debug--------------------
Compiling...
try1.cpp
DllEntry.cpp
Linking...
  Creating library Debug/try1.lib and object Debug/try1.exp
try1.obj : error LNK2001: unresolved external symbol "public: virtual char
* __thiscall ClassDesc::GetRsrcString(long)"
(?GetRsrcString@ClassDesc@@UAEPADJ@Z)
D:\3dsmax7\plugins\try1.dle : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

/////////////////////////////
CoreExport virtual char* GetRsrcString(long id) { return ""; } // Added by
Jacky


Sorry, but I did not mean that.

If you want to use Unicode aware code, you should use TCHAR.

My suggesion was - considering the error message complaing about char* - to
use explicit char*, and not TCHAR (I had an hypothesis about mismatch of
char*/wchar_t*).

If you *coherently* use TCHARs, continue doing so.

Another suggestion was to put the method implementation *outside* header
file:

// In header .h file:

 CoreExport virtual TCHAR * GetRsrcString(long id);

// In .cpp file

  TCHAR * ClassDesc::GetRsrcString( long id )
   {
      return _T("Something...");
   }

BTW: Do you properly use preprocessor macros for
__declspec(dllimport/export) ?

// --- In header file:

#ifndef CoreExport
#define CoreExport __declspec( dllimport )
#endif

// --- in .cpp file:

// Define before #including header
#define CoreExport __declspec( dllexport )

#include "ClassDesc.h" // Header file

....

And I did not know that you are trying to mix VC7 and VC6 libraries... (I
learned that from Uli's post).
It is impossible to do that (you can do such a binary mix only if you use
COM, which I think is not your case).
As Uli's suggested, you need to build *everything* with the same compiler.

Giovanni

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